해수펌프 임펠러 샤프트의 구조 재설계Structural Re-design of Seawater Pump Impeller Shaft
- Other Titles
- Structural Re-design of Seawater Pump Impeller Shaft
- Authors
- 조규남
- Issue Date
- 2010
- Publisher
- 한국해안,해양공학회
- Keywords
- impeller shaft; stress concentration; re-design; unbalancing loads; resonance; 임펠러샤프트; 응력집중; 재설계; 비균형하중; 공진
- Citation
- 한국해안·해양공학회논문집, v.22, no.5, pp.326 - 332
- Journal Title
- 한국해안·해양공학회논문집
- Volume
- 22
- Number
- 5
- Start Page
- 326
- End Page
- 332
- URI
- https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/21114
- ISSN
- 1976-8192
- Abstract
- Critical response of seawater pump impeller shaft structure to various exciting loads is a fundamental factor in re-designing of the structure after its functional failure. In this paper, a typical case of the shaft structure's failure is investigated for re-designing purposes. Failure causes of interest are excessive bending moment, fatigue loads and dynamic resonance due to relevant motor rotation and unbalancing of the rotation loads. Static analyses of shaft structure under the conditions of concerned loads are carried out, followed by a dynamic investigation of the effects of resonance between the shaft and the motor on the structure. The relevant structural analyses are carried out using the Finite Element Methods combined with ANSYS code. Based on these, the primary cause for the shaft's structural failure is obtained. It is found that the change of the bending stiffness of the shaft is the primary concern in the re-designing process. A guideline for the re-design process of the seawater pump shaft structure is established, and a re-design scheme of the structure is proposed.
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